If you want to record of purchase Inverter, you can add Purchase Voucher by using below steps:
Step 1: First, create an item for the Inverter in the Item Master. If the Inverter is a fixed asset, then link the Fixed Assets account to the item master.
Step 2: Next, go to the Transactions menu and click on Purchase. This will open the Purchase Voucher Entry screen.
Step 3: Enter the necessary details such as date, voucher number, GST nature, item, quantity, etc. and save the transaction. This will record the purchase of the Inverter in BUSY.